package com.mmall.service.impl;

import com.alipay.api.AlipayResponse;
import com.alipay.api.response.AlipayTradePrecreateResponse;
import com.alipay.demo.trade.config.Configs;
import com.alipay.demo.trade.model.ExtendParams;
import com.alipay.demo.trade.model.GoodsDetail;
import com.alipay.demo.trade.model.builder.AlipayTradePrecreateRequestBuilder;
import com.alipay.demo.trade.model.result.AlipayF2FPrecreateResult;
import com.alipay.demo.trade.service.AlipayTradeService;
import com.alipay.demo.trade.service.impl.AlipayTradeServiceImpl;
import com.alipay.demo.trade.utils.ZxingUtils;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.google.common.collect.Lists;
import com.mmall.common.Const;
import com.mmall.common.ServerResponse;
import com.mmall.dao.*;
import com.mmall.pojo.*;
import com.mmall.service.IOrderService;
import com.mmall.utils.DateTimeUtil;
import com.mmall.utils.FTPUtil;
import com.mmall.utils.PropertiesUtil;
import com.mmall.vo.OrderItemVo;
import com.mmall.vo.OrderProductVo;
import com.mmall.vo.OrderVo;
import com.mmall.vo.ShippingVo;
import org.apache.commons.collections.CollectionUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang3.time.DateUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.io.File;
import java.io.IOException;
import java.math.BigDecimal;
import java.util.*;

@Service
public class OrderServiceImpl implements IOrderService {

    private static final Logger logger = LoggerFactory.getLogger(OrderServiceImpl.class);

    @Autowired
    private OrderMapper orderMapper;

    @Autowired
    private OrderItemMapper orderItemMapper;

    @Autowired
    private PayInfoMapper payInfoMapper;

    @Autowired
    private CartMapper cartMapper;

    @Autowired
    private ProductMapper productMapper;

    @Autowired
    private ShippingMapper shippingMapper;
    /**创建订单
     * @param userId
     * @param shippingId
     * @return
     */
    @Transactional
    public ServerResponse createOrder(Integer userId, Integer shippingId) {
        //从购物车中获取数据
        List<Cart> cartList = cartMapper.selectCheckedCartByUserId(userId);
        //得到购物车的orderItem
        ServerResponse serverResponse = getCartOrderItem(userId, cartList);
        if (!serverResponse.isSuccess()) {
            return serverResponse;
        }
        List<OrderItem> orderItemList = (List<OrderItem>) serverResponse.getData();
        if (CollectionUtils.isEmpty(orderItemList)) {
            return ServerResponse.retErrorMsg("购物车为空");
        }
        BigDecimal payment = getOrderTotalPrice(orderItemList);

        //生成订单
        Order order = assembleOrder(userId, shippingId, payment);
        if (order == null) {
            return ServerResponse.retErrorMsg("生成订单错误");
        }
        for (OrderItem orderItem : orderItemList) {
            orderItem.setOrderNo(order.getOrderNo());
        }
        //mybatis批量插入
        orderItemMapper.batchInsert(orderItemList);

        //减少库存
        reduceProductStock(orderItemList);
        //清空购物车
        cleanCart(cartList);

        //返回数据
        OrderVo orderVo = assembleOrderVo(order,orderItemList);

        return serverResponse.retSuccessData(orderVo);
    }
    //组装订单
    private OrderVo assembleOrderVo(Order order, List<OrderItem> orderItemList) {
        OrderVo orderVo = new OrderVo();
        orderVo.setOrderNo(order.getOrderNo());
        orderVo.setPayment(order.getPayment());
        orderVo.setPaymentType(order.getPaymentType());
        orderVo.setPaymentTypeDesc(Const.PaymentType.codeOf(order.getPaymentType()).getValue());

        orderVo.setPostage(order.getPostage());
        orderVo.setStatus(order.getStatus());
        orderVo.setStatusDesc(Const.OrderStatus.codeOf(order.getStatus()).getValue());

        orderVo.setShipping(order.getShippingId());
        Shipping shipping = shippingMapper.selectByPrimaryKey(order.getShippingId());
        if (shipping != null) {
            orderVo.setReceiverName(shipping.getReceiverName());
        }

        orderVo.setShippingVo(assembleShippingVo(shipping));

        orderVo.setPaymentTime(DateTimeUtil.dateToStr(order.getPaymentTime()));
        orderVo.setSendTime(DateTimeUtil.dateToStr(order.getSendTime()));
        orderVo.setEndTime(DateTimeUtil.dateToStr(order.getEndTime()));
        orderVo.setCreateTime(DateTimeUtil.dateToStr(order.getCreateTime()));
        orderVo.setCloseTime(DateTimeUtil.dateToStr(order.getCloseTime()));

        orderVo.setImageHost(PropertiesUtil.getProperty("ftp.server.http.prefix"));

        List<OrderItemVo> orderItemVoList = new ArrayList<OrderItemVo>();
        for (OrderItem orderItem : orderItemList) {
            orderItemVoList.add(assembleOrderItemVo(orderItem));
        }
        orderVo.setOrderItemVoList(orderItemVoList);
        return orderVo;
    }

    //组装orderItemVo
    private OrderItemVo assembleOrderItemVo(OrderItem orderItem) {
        OrderItemVo orderItemVo = new OrderItemVo();
        BeanUtils.copyProperties(orderItem,orderItemVo,new String[]{"createTime"});
        orderItemVo.setCreateTime(DateTimeUtil.dateToStr(orderItem.getCreateTime()));
        return orderItemVo;
    }
    //组装shippingvo
    private ShippingVo assembleShippingVo(Shipping shipping) {
        ShippingVo shippingVo = new ShippingVo();
        BeanUtils.copyProperties(shipping,shippingVo);
        return shippingVo;
    }

    //清空购物车
    private void cleanCart(List<Cart> cartList) {
        for (Cart cart : cartList) {
            cartMapper.deleteByPrimaryKey(cart.getId());
        }
    }
    //减少库存
    private void reduceProductStock(List<OrderItem> orderItemList) {
        for (OrderItem orderItem : orderItemList) {
            Product product = productMapper.selectByPrimaryKey(orderItem.getProductId());
            product.setStock(product.getStock() - orderItem.getQuantity());
            productMapper.updateByPrimaryKeySelective(product);
        }
    }
    //装配订单
    private Order assembleOrder(Integer userId, Integer shippingId, BigDecimal payment) {
        Order order = new Order();
        Long orderNo = generateOrderNo();
        order.setOrderNo(orderNo);
        order.setStatus(Const.OrderStatus.NO_PAY.getCode());
        order.setPostage(0);
        order.setPaymentType(Const.PaymentType.ONLINE_PAY.getCode());
        order.setPayment(payment);
        order.setUserId(userId);
        order.setShippingId(shippingId);

        //保存数据
        int rowCount = orderMapper.insert(order);
        if (rowCount > 0) {
            return order;
        }
        return null;
    }
    //生成订单号
    private Long generateOrderNo(){
        Long currentTime = System.currentTimeMillis();
        return currentTime+new Random().nextInt(100);
    }

    //计算总价
    private BigDecimal getOrderTotalPrice(List<OrderItem> orderItemList) {
        BigDecimal payment = new BigDecimal("0");
        for (OrderItem orderItem : orderItemList) {
            payment = payment.add(new BigDecimal(orderItem.getTotalPrice().toString()));
        }
        return payment;
    }

    //得到购物车的orderItem
    private ServerResponse getCartOrderItem(Integer userId, List<Cart> cartList) {
        List<OrderItem> orderItemList = new ArrayList<OrderItem>();
        if (CollectionUtils.isEmpty(cartList)) {
            return ServerResponse.retErrorMsg("购物车为空");
        }
        //校验购物车中的数据，包括产品的状态和数量
        for (Cart cartItem : cartList) {
            OrderItem orderItem = new OrderItem();
            Product product = productMapper.selectByPrimaryKey(cartItem.getProductId());
            if (Const.ProductStatus.ON_SALE.getCode() != product.getStatus()) {
                return ServerResponse.retErrorMsg("产品:" + product.getName() + "不是在线售卖状态");
            }
            //校验库存
            if (cartItem.getQuantity() > product.getStock()) {
                return ServerResponse.retErrorMsg("产品:" + product.getName() + "库存不足");
            }
            orderItem.setUserId(userId);
            orderItem.setProductId(product.getId());
            orderItem.setProductName(product.getName());
            orderItem.setProductImage(product.getMainImage());
            orderItem.setCurrentUnitPrice(product.getPrice());
            orderItem.setQuantity(cartItem.getQuantity());
            orderItem.setTotalPrice(product.getPrice().multiply(new BigDecimal(String.valueOf(cartItem.getQuantity()))));
            orderItemList.add(orderItem);
        }
        return ServerResponse.retSuccessData(orderItemList);
    }

    //取消订单
    public ServerResponse cancel(Integer userId, Long orderNo) {
        Order order = orderMapper.selectByUserIdAndOrderNo(userId, orderNo);
        if (order == null) {
            return ServerResponse.retErrorMsg("该用户没有此订单");
        }
        if (order.getStatus() != Const.OrderStatus.NO_PAY.getCode()) {
            return ServerResponse.retErrorMsg("订单不是新订单，无法取消");
        }
        Order updateOrder = new Order();
        updateOrder.setId(order.getId());
        updateOrder.setStatus(Const.OrderStatus.CANCELED.getCode());
        int row = orderMapper.updateByPrimaryKeySelective(updateOrder);
        if (row > 0) {
            return ServerResponse.retSuccess();
        }
        return ServerResponse.retError();
    }

    //获取购物车中选中的产品
    public ServerResponse getOrderCartProduct(Integer userId) {
        OrderProductVo orderProductVo = new OrderProductVo();
        //从购物车中获取数据
        List<Cart> cartList = cartMapper.selectCartByUserId(userId);
        ServerResponse response = this.getCartOrderItem(userId, cartList);
        if (!response.isSuccess()) {
            return response;
        }
        List<OrderItem> orderItemList = (List<OrderItem>) response.getData();

        List<OrderItemVo> orderItemVoList = new ArrayList<OrderItemVo>();
        BigDecimal payment = new BigDecimal("0");
        for (OrderItem orderItem : orderItemList) {
            payment = payment.add(new BigDecimal(orderItem.getTotalPrice().toString()));
            orderItemVoList.add(assembleOrderItemVo(orderItem));
        }
        orderProductVo.setProductTotalPrice(payment);
        orderProductVo.setOrderItemVoList(orderItemVoList);
        orderProductVo.setImageHost(PropertiesUtil.getProperty("ftp.server.http.prefix"));
        return ServerResponse.retSuccessData(orderProductVo);
    }

    //订单详情
    public ServerResponse getOrderDetail(Integer userId, Long orderNo) {
        Order order = orderMapper.selectByUserIdAndOrderNo(userId, orderNo);
        if (order != null) {
            List<OrderItem> orderItemList = orderItemMapper.selectByOrderNoAndUserId(orderNo, userId);
            OrderVo orderVo = assembleOrderVo(order, orderItemList);
            return ServerResponse.retSuccessData(orderVo);
        }
        return ServerResponse.retErrorMsg("没有找到此订单");
    }

    //订单列表
    public ServerResponse getOrderList(Integer userId, int pageNum, int pageSize) {

        PageHelper.startPage(pageNum, pageSize);
        List<Order> orderList = orderMapper.selectByUserId(userId);

        List<OrderVo> orderVoList = assembleOrderVoList(orderList, userId);
        PageInfo pageInfo = new PageInfo(orderList);
        pageInfo.setList(orderVoList);
        return ServerResponse.retSuccessData(pageInfo);
    }

    //组装订单列表
    private List<OrderVo> assembleOrderVoList(List<Order> orderList, Integer userId) {
        List<OrderVo> orderVoList = new ArrayList<OrderVo>();
        for (Order order : orderList) {
            List<OrderItem> orderItemList = new ArrayList<OrderItem>();
            if (userId == null) {
                //管理员查询，不要userId
                orderItemList = orderItemMapper.selectByOrderNo(order.getOrderNo());
            }else{
                orderItemList = orderItemMapper.selectByOrderNoAndUserId(order.getOrderNo(), userId);
            }
            OrderVo orderVo = assembleOrderVo(order, orderItemList);
            orderVoList.add(orderVo);
        }
        return orderVoList;
    }

    //管理员列表查询
    public ServerResponse manageList(int pageNum, int pageSize) {
        PageHelper.startPage(pageNum, pageSize);
        List<Order> orderList = orderMapper.selectAllOrder();
        List<OrderVo> orderVoList = assembleOrderVoList(orderList, null);
        PageInfo pageInfo = new PageInfo(orderList);
        pageInfo.setList(orderVoList);

        return ServerResponse.retSuccessData(pageInfo);
    }

    //管理员详情
    public ServerResponse manageDetail(Long orderNo) {
        Order order = orderMapper.selectByOrderNo(orderNo);
        if (order != null) {
            List<OrderItem> orderItemList = orderItemMapper.selectByOrderNo(orderNo);
            OrderVo orderVo = assembleOrderVo(order, orderItemList);
            return ServerResponse.retSuccessData(orderVo);
        }
        return ServerResponse.retErrorMsg("订单不存在");
    }

    //管理员订单查询
    public ServerResponse manageSearch(Long orderNo,int pageNum, int pageSize) {
        PageHelper.startPage(pageNum, pageSize);
        Order order = orderMapper.selectByOrderNo(orderNo);
        if (order != null) {
            List<OrderItem> orderItemList = orderItemMapper.selectByOrderNo(orderNo);
            OrderVo orderVo = assembleOrderVo(order, orderItemList);

            PageInfo pageInfo = new PageInfo(Lists.newArrayList(order));
            pageInfo.setList(Lists.newArrayList(orderVo));
            return ServerResponse.retSuccessData(pageInfo);
        }
        return ServerResponse.retErrorMsg("订单不存在");
    }

    //发货状态更改
    public ServerResponse manageSendGoods(Long orderNo) {
        Order order = orderMapper.selectByOrderNo(orderNo);
        if (order != null) {
            if (order.getStatus() == Const.OrderStatus.PAID.getCode()) {
                order.setStatus(Const.OrderStatus.SHIPPED.getCode());
                order.setSendTime(new Date());
                orderMapper.updateByPrimaryKeySelective(order);
                return ServerResponse.retSuccessData("发货成功");
            }
        }
        return ServerResponse.retErrorMsg("订单不存在");
    }

    //订单支付
    public ServerResponse pay(Long orderNo, Integer userId, String path) {
        Map<String, String> resultMap = new HashMap<String, String>();
        Order order = orderMapper.selectByUserIdAndOrderNo(userId, orderNo);
        if (order == null) {
            return ServerResponse.retErrorMsg("用户没有该订单！");
        }
        if (order.getStatus() >= Const.OrderStatus.PAID.getCode()) {
            return ServerResponse.retErrorMsg("订单："+orderNo+"已支付");
        }
        resultMap.put("orderNo", String.valueOf(order.getOrderNo()));

        // (必填) 商户网站订单系统中唯一订单号，64个字符以内，只能包含字母、数字、下划线，
        // 需保证商户系统端不能重复，建议通过数据库sequence生成，
        String outTradeNo = order.getOrderNo().toString();

        // (必填) 订单标题，粗略描述用户的支付目的。如“xxx品牌xxx门店当面付扫码消费”
        String subject = new StringBuilder().append("happymmall扫码支付，订单号：").append(outTradeNo).toString();


        // (必填) 订单总金额，单位为元，不能超过1亿元
        // 如果同时传入了【打折金额】,【不可打折金额】,【订单总金额】三者,则必须满足如下条件:【订单总金额】=【打折金额】+【不可打折金额】
        String totalAmount = order.getPayment().toString();

        // (可选) 订单不可打折金额，可以配合商家平台配置折扣活动，如果酒水不参与打折，则将对应金额填写至此字段
        // 如果该值未传入,但传入了【订单总金额】,【打折金额】,则该值默认为【订单总金额】-【打折金额】
        String undiscountableAmount = "0";

        // 卖家支付宝账号ID，用于支持一个签约账号下支持打款到不同的收款账号，(打款到sellerId对应的支付宝账号)
        // 如果该字段为空，则默认为与支付宝签约的商户的PID，也就是appid对应的PID
        String sellerId = "";

        // 订单描述，可以对交易或商品进行一个详细地描述，比如填写"购买商品2件共15.00元"
        String body = new StringBuilder().append("订单").append(outTradeNo).append("购买商品共").append(totalAmount).append("元").toString();

        // 商户操作员编号，添加此参数可以为商户操作员做销售统计
        String operatorId = "test_operator_id";

        // (必填) 商户门店编号，通过门店号和商家后台可以配置精准到门店的折扣信息，详询支付宝技术支持
        String storeId = "test_store_id";

        // 业务扩展参数，目前可添加由支付宝分配的系统商编号(通过setSysServiceProviderId方法)，详情请咨询支付宝技术支持
        ExtendParams extendParams = new ExtendParams();
        extendParams.setSysServiceProviderId("2088100200300400500");

        // 支付超时，定义为120分钟
        String timeoutExpress = "120m";

        // 商品明细列表，需填写购买商品详细信息，
        List<GoodsDetail> goodsDetailList = new ArrayList<GoodsDetail>();

        List<OrderItem> orderItemList = orderItemMapper.selectByOrderNoAndUserId(orderNo, userId);

        for (OrderItem orderItem : orderItemList) {
            // 创建一个商品信息，参数含义分别为商品id（使用国标）、名称、单价（单位为分）、数量，如果需要添加商品类别，详见GoodsDetail
            GoodsDetail goods1 = GoodsDetail.newInstance(orderItem.getProductId().toString(),
                    orderItem.getProductName(),
                    orderItem.getCurrentUnitPrice().multiply(new BigDecimal("100")).longValue(),
                    orderItem.getQuantity() );
            goodsDetailList.add(goods1);
        }

        // 创建扫码支付请求builder，设置请求参数
        AlipayTradePrecreateRequestBuilder builder = new AlipayTradePrecreateRequestBuilder()
                .setSubject(subject).setTotalAmount(totalAmount).setOutTradeNo(outTradeNo)
                .setUndiscountableAmount(undiscountableAmount).setSellerId(sellerId).setBody(body)
                .setOperatorId(operatorId).setStoreId(storeId).setExtendParams(extendParams)
                .setTimeoutExpress(timeoutExpress)
                //.setNotifyUrl("http://www.test-notify-url.com")//支付宝服务器主动通知商户服务器里指定的页面http路径,根据需要设置
                //.setNotifyUrl(PropertiesUtil.getProperty("alipay.callback.url"))
                .setGoodsDetailList(goodsDetailList);
        /** 一定要在创建AlipayTradeService之前调用Configs.init()设置默认参数
         *  Configs会读取classpath下的zfbinfo.properties文件配置信息，如果找不到该文件则确认该文件是否在classpath目录
         */
        Configs.init("zfbinfo.properties");

        /** 使用Configs提供的默认参数
         *  AlipayTradeService可以使用单例或者为静态成员对象，不需要反复new
         */
        AlipayTradeService tradeService = new AlipayTradeServiceImpl.ClientBuilder().build();
        //执行
        AlipayF2FPrecreateResult result = tradeService.tradePrecreate(builder);

        switch (result.getTradeStatus()) {
            case SUCCESS:
                logger.info("支付宝预下单成功: )");

                AlipayTradePrecreateResponse response = result.getResponse();
                dumpResponse(response);

                File folder = new File(path);
                if (!folder.exists()) {
                    folder.setWritable(true);
                    folder.mkdirs();
                }

                // 需要修改为运行机器上的路径,路径
                String qrPath = String.format(path+"/qr-%s.png",response.getOutTradeNo());
                //二维码文件
                String qrFileName = String.format("qr-%s.png", response.getOutTradeNo());
                //根据path生成二维码文件
                ZxingUtils.getQRCodeImge(response.getQrCode(), 256, qrPath);
                logger.info("filePath:" + qrPath);

                //文件服务器文件
                File targetFile = new File(path, qrFileName);

                try {
                    FTPUtil.uploadFile(Lists.<File>newArrayList(targetFile));
                } catch (IOException e) {
                    logger.error("上传二维码异常",e);
                }

                String qrUrl = PropertiesUtil.getProperty("ftp.server.http.prefix")+targetFile.getName();
                resultMap.put("qrUrl",qrUrl);
                return ServerResponse.retSuccessData(resultMap);

            case FAILED:
                logger.error("支付宝预下单失败!!!");
                return ServerResponse.retErrorMsg("支付宝预下单失败!!!");
            case UNKNOWN:
                logger.error("系统异常，预下单状态未知!!!");
                return ServerResponse.retErrorMsg("系统异常，预下单状态未知!!!");

            default:
                logger.error("不支持的交易状态，交易返回异常!!!");
                return ServerResponse.retErrorMsg("不支持的交易状态，交易返回异常!!!");
        }

    }
        // 简单打印应答
    private void dumpResponse(AlipayResponse response) {
        if (response != null) {
            logger.info(String.format("code:%s, msg:%s", response.getCode(), response.getMsg()));
            if (StringUtils.isNotEmpty(response.getSubCode())) {
                logger.info(String.format("subCode:%s, subMsg:%s", response.getSubCode(),
                        response.getSubMsg()));
            }
            logger.info("body:" + response.getBody());
        }
    }

    public ServerResponse aliCallback(Map<String, String> params) {
        Long orderNo = Long.parseLong(params.get("out_trade_no"));
        String tradeNo = params.get("trade_no");
        String tradeStatus = params.get("trade_status");
        Order order = orderMapper.selectByOrderNo(orderNo);
        if (order == null) {
            return ServerResponse.retErrorMsg("非此商城订单，回调忽略");
        }
        if (order.getStatus() >= Const.OrderStatus.PAID.getCode()) {
            return ServerResponse.retSuccessMsg("支付宝重复调用");
        }
        if (Const.AlipayCallback.TRADE_SUCCESS.equals(tradeStatus)) {
            //交易成功，将订单状态改为已付款
            order.setPaymentTime(DateTimeUtil.strToDate(params.get("gmt_payment")));
            order.setStatus(Const.OrderStatus.PAID.getCode());
            orderMapper.updateByPrimaryKeySelective(order);
        }
        //支付信息保存
        PayInfo payInfo = new PayInfo();
        payInfo.setUserId(order.getUserId());
        payInfo.setOrderNo(order.getOrderNo());
        payInfo.setPayPlatform(Const.PlatForm.ALIPAY.getCode());
        payInfo.setPlatformNumber(tradeNo);
        payInfo.setPlatformStatus(tradeStatus);
        payInfoMapper.insert(payInfo);

        return ServerResponse.retSuccess();
    }

    public ServerResponse queryOrderPayStatus(Integer userId, Long orderNo) {
        Order order = orderMapper.selectByUserIdAndOrderNo(userId, orderNo);
        if (order == null) {
            return ServerResponse.retErrorMsg("用户没有该订单");
        }
        if (order.getStatus() >= Const.OrderStatus.PAID.getCode()) {
            return ServerResponse.retSuccess();
        }
        return ServerResponse.retError();
    }

    /**定时关闭订单
     * @param hour
     */
    @Override
    public void closeOrder(int hour) {
        //hour个小时前
        Date closeDateTime = DateUtils.addHours(new Date(), -hour);

        List<Order> orderList = orderMapper.selectOrderStatusByCreateTime(Const.OrderStatus.NO_PAY.getCode(),
                DateTimeUtil.dateToStr(closeDateTime));

        for (Order order : orderList) {
            List<OrderItem> orderItemList = orderItemMapper.selectByOrderNo(order.getOrderNo());
            for (OrderItem orderItem : orderItemList) {

                //一定要用主键where条件，防止锁表，同事必须支持mySql的InnoDB引擎
                Integer stock = productMapper.selectStockByProductId(orderItem.getProductId());

                //考虑到已生成的订单的商品被删除的情况
                if (stock == null) {
                    continue;
                }
                //重置库存，
                Product product = new Product();
                product.setId(orderItem.getProductId());
                product.setStock(stock + orderItem.getQuantity());
                productMapper.updateByPrimaryKeySelective(product);

            }
            orderMapper.closeOrderByOrderId(order.getId());
            logger.info("定时关闭订单OderNo:{}", order.getOrderNo());
        }
    }
}
